8660660 has 12 divisors (see below), whose sum is σ = 18187428. Its totient is φ = 3464256.

The previous prime is 8660657. The next prime is 8660671. The reversal of 8660660 is 660668.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1196836 + 7463824 = 1094^2 + 2732^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 216497 + ... + 216536.

It is an arithmetic number, because the mean of its divisors is an integer number (1515619).

Almost surely, 2^8660660 is an apocalyptic number.

It is an amenable number.

8660660 is an abundant number, since it is smaller than the sum of its proper divisors (9526768).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8660660 is a wasteful number, since it uses less digits than its factorization.

8660660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 433042 (or 433040 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 8660660 is about 2942.8999303408. The cubic root of 8660660 is about 205.3605394415.

The spelling of 8660660 in words is "eight million, six hundred sixty thousand, six hundred sixty".